Toilet Seat Fittings and Fixtures 2pcs Toilet Cover Screws Stainless Steel Top Fixing Hinge Screws Expansion Nylon Nuts White Toilet Cover Fixing Bolts Blind Hole Fitting WC Replacement Kit Material: The expansion nut is made of high quality stainless steel and nylon, it is used to fix the toilet cover and is durable. Kit: Expansion Nut Kit contains 2 stainless steel screws, 2 nylon expansion nuts and 2 metal washers. Screw size: 4.80.6cm. Nylon expansion nut size: 3.81.4cm. Washer diameter: 14mm. Reminder: Please make sure the size is right before buying. Specification: Material: stainless steel + nylon Stainless Steel Screw Size: 4.80.6cm Nylon expansion nut size: 3.81.4cm Washer diameter: 14mm Color: silver + white Package includes: 2 × expansion nut set